DTC U264A:13 [DASH-ELECTRICAL SUPPLY UNIT (E)]

System malfunction location	Ignition switch
Detection condition	• The dash-electrical supply unit detects that the IG1 power supply condition determined from the climate control unit power supply circuit (IG1) is off even though the IG1 power supply condition received via CAN communication from body control module (BCM) is on.
Fail-safe	• Not applicable
Possible cause	• IG1 relay No.2 malfunction • Climate control unit connector or terminals malfunction • F47 15 A fuse malfunction • Short to ground in climate control unit power supply circuit (IG1) • Open circuit in climate control unit power supply circuit (IG1) • Climate control unit malfunction • Dash-electrical supply unit malfunction

System malfunction location

Ignition switch

Detection condition

• The dash-electrical supply unit detects that the IG1 power supply condition determined from the climate control unit power supply circuit (IG1) is off even though the IG1 power supply condition received via CAN communication from body control module (BCM) is on.

Fail-safe

• Not applicable

Possible cause

• IG1 relay No.2 malfunction

• Climate control unit connector or terminals malfunction

• F47 15 A fuse malfunction

• Short to ground in climate control unit power supply circuit (IG1)

• Open circuit in climate control unit power supply circuit (IG1)

• Climate control unit malfunction

• Dash-electrical supply unit malfunction

Step	Inspection	Results	Action
1	INSPECT IG1 RELAY No.2 FOR MALFUNCTION • Inspect the applicable part. (See RELAY INSPECTION.) • Is the part normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See RELAY LOCATION [(E)].)
2	INSPECT CLIMATE CONTROL UNIT CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT F47 15 A FUSE • Remove the F47 15 A fuse. • Inspect the F47 15 A fuse. • Is the fuse normal?	Yes	Reinstall the F47 15 A fuse, then go to the next step.
No	Replace the F47 15 A fuse and perform the repair completion verification.
4	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
5	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT CLIMATE CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

INSPECT IG1 RELAY No.2 FOR MALFUNCTION

• Inspect the applicable part.

(See RELAY INSPECTION.)

• Is the part normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See RELAY LOCATION [(E)].)

INSPECT CLIMATE CONTROL UNIT CONNECTOR FOR MALFUNCTION

• Inspect the applicable connector and terminal.

(See CONNECTOR INSPECTION.)

• Are the connector and terminal normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT F47 15 A FUSE

• Remove the F47 15 A fuse.

• Inspect the F47 15 A fuse.

• Is the fuse normal?

Yes

Reinstall the F47 15 A fuse, then go to the next step.

Replace the F47 15 A fuse and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND

• Inspect the applicable circuit for a short to ground.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT

• Inspect the applicable circuit for open circuit.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

• Install/connect the part removed/disconnected during the troubleshooting procedure.

• Clear the DTC recorded in the memory.

(See CLEARING DTC.)

• Perform the DTC inspection for the dash-electrical supply unit.

(See DTC INSPECTION.)

• Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

• Install/connect the part removed/disconnected during the troubleshooting procedure.

• Clear the DTC recorded in the memory.

(See CLEARING DTC.)

• Perform the DTC inspection for the dash-electrical supply unit.

(See DTC INSPECTION.)

• Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

• If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

• Perform the DTC inspection.

(See DTC INSPECTION.)

• Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

DTC troubleshooting completed.

System malfunction location	Ignition switch
Detection condition	• The dash-electrical supply unit detects that the IG1 power supply condition determined from the climate control unit power supply circuit (IG1) is off even though the IG1 power supply condition received via CAN communication from body control module (BCM) is on.
Fail-safe	• Not applicable
Possible cause	• Ignition relay (IG1_STAB) malfunction • DC-DC converter connector or terminals malfunction • F16 15 A fuse malfunction • Short to ground in ignition relay (IG1_STAB) power supply circuit • Open circuit in ignition relay (IG1_STAB) power supply circuit • DC-DC converter malfunction • Climate control unit connector or terminals malfunction • Short to ground in climate control unit power supply circuit (IG1) • Open circuit in climate control unit power supply circuit (IG1) • Climate control unit malfunction • Dash-electrical supply unit malfunction

System malfunction location

Ignition switch

Detection condition

Fail-safe

• Not applicable

Possible cause

• Ignition relay (IG1_STAB) malfunction

• DC-DC converter connector or terminals malfunction

• F16 15 A fuse malfunction

• Short to ground in ignition relay (IG1_STAB) power supply circuit

• Open circuit in ignition relay (IG1_STAB) power supply circuit

• DC-DC converter malfunction

• Climate control unit connector or terminals malfunction

• Short to ground in climate control unit power supply circuit (IG1)

• Open circuit in climate control unit power supply circuit (IG1)

• Climate control unit malfunction

• Dash-electrical supply unit malfunction

Step	Inspection	Results	Action
1	DETERMINE MALFUNCTIONING LOCATION • Switch the ignition ON (engine off or on). • Measure the voltage at the ignition relay (IG1_STAB) terminal D (wiring harness-side). • Is the voltage B+?	Yes	Go to Step 8.
No	Go to the next step.
2	INSPECT IGNITION RELAY (IG1_STAB) FOR MALFUNCTION • Inspect the applicable part. (See RELAY INSPECTION.) • Is the part normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See RELAY LOCATION [(E)].)
3	INSPECT DC-DC CONVERTER CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT F16 15 A FUSE • Remove the F16 15 A fuse. • Inspect the F16 15 A fuse. • Is the fuse normal?	Yes	Reinstall the F16 15 A fuse, then go to the next step.
No	Replace the F16 15 A fuse and perform the repair completion verification.
5	INSPECT IGNITION RELAY (IG1_STAB) POWER SUPPLY CIRCUIT FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT IGNITION RELAY (IG1_STAB) POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
7	INSPECT DC-DC CONVERTER FOR MALFUNCTION • Inspect the applicable part. (See DC-DC CONVERTER INSPECTION [SKYACTIV-D 1.8].) • Is the part normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification. (See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].) (See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)].) (See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
8	INSPECT CLIMATE CONTROL UNIT CONNECTOR FOR MALFUNCTION • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) • Are the connector and terminal normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
9	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
10	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) • Is the circuit normal?	Yes	Go to the next step.
No	Repair or replace the malfunctioning location and perform the repair completion verification.
11	INSPECT CLIMATE CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to repair completion verification 2.
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Clear the DTC recorded in the memory. (See CLEARING DTC.) • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION.) • Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step. (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].) (See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)
No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTCs DISPLAYED • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
No	DTC troubleshooting completed.

Step

Inspection

Results

Action

DETERMINE MALFUNCTIONING LOCATION

• Switch the ignition ON (engine off or on).

• Measure the voltage at the ignition relay (IG1_STAB) terminal D (wiring harness-side).

• Is the voltage B+?

Yes

Go to Step 8.

Go to the next step.

INSPECT IGNITION RELAY (IG1_STAB) FOR MALFUNCTION

• Inspect the applicable part.

(See RELAY INSPECTION.)

• Is the part normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See RELAY LOCATION [(E)].)

INSPECT DC-DC CONVERTER CONNECTOR FOR MALFUNCTION

• Inspect the applicable connector and terminal.

(See CONNECTOR INSPECTION.)

• Are the connector and terminal normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT F16 15 A FUSE

• Remove the F16 15 A fuse.

• Inspect the F16 15 A fuse.

• Is the fuse normal?

Yes

Reinstall the F16 15 A fuse, then go to the next step.

Replace the F16 15 A fuse and perform the repair completion verification.

INSPECT IGNITION RELAY (IG1_STAB) POWER SUPPLY CIRCUIT FOR SHORT TO GROUND

• Inspect the applicable circuit for a short to ground.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT IGNITION RELAY (IG1_STAB) POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT

• Inspect the applicable circuit for open circuit.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT DC-DC CONVERTER FOR MALFUNCTION

• Inspect the applicable part.

(See DC-DC CONVERTER INSPECTION [SKYACTIV-D 1.8].)

• Is the part normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

(See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].)

(See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)].)

(See DC-DC CONVERTER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

INSPECT CLIMATE CONTROL UNIT CONNECTOR FOR MALFUNCTION

• Inspect the applicable connector and terminal.

(See CONNECTOR INSPECTION.)

• Are the connector and terminal normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND

• Inspect the applicable circuit for a short to ground.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT

• Inspect the applicable circuit for open circuit.

(See CIRCUIT INSPECTION.)

• Is the circuit normal?

Yes

Go to the next step.

Repair or replace the malfunctioning location and perform the repair completion verification.

INSPECT CLIMATE CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY

• Install/connect the part removed/disconnected during the troubleshooting procedure.

• Clear the DTC recorded in the memory.

(See CLEARING DTC.)

• Perform the DTC inspection for the dash-electrical supply unit.

(See DTC INSPECTION.)

• Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.

(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

Go to repair completion verification 2.

Repair completion verification 1

VERIFY THAT VEHICLE IS REPAIRED

• Install/connect the part removed/disconnected during the troubleshooting procedure.

• Clear the DTC recorded in the memory.

(See CLEARING DTC.)

• Perform the DTC inspection for the dash-electrical supply unit.

(See DTC INSPECTION.)

• Is the same Pending DTC present?

Yes

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

• If the malfunction recurs, replace the dash-electrical supply unit, then go to the next step.

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (E)].)

(See DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (E)].)

Go to the next step.

Repair completion verification 2

VERIFY IF OTHER DTCs DISPLAYED

• Perform the DTC inspection.

(See DTC INSPECTION.)

• Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

DTC troubleshooting completed.

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